https://docs.microsoft.com/en-us/officeonlineserver/enable-tls-1-1-and-tls-1-2-support-in-office-online-server

修改注册表

Windows Registry Editor Version 5.00

　　 [HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\v4.0.30319] "SchUseStrongCrypto"=dword:00000001

　　[HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\v4.0.30319] "SchUseStrongCrypto"=dword:00000001